You can keep a no - annual - fee card open without impacting your household budget for years after you graduate, especially if you don't use it for regular transactions. (cardratings.com)
There is a $ 10 or 5 % fee on regular transactions when needed. (lendedu.com)
To develop a digital currency, not controlled by a corrupt government or organisation and which could be used in regular transactions. (bitcoinafrica.io)